Stainless Steel hex socket cap screw

The maximum unscrewing torque of the lock nut is affected by many factors. For the research on the low-cycle fatigue performance of lock nuts, the pitch diameter of the thread, the helix angle and the bevel angle of the tooth profile remain unchanged, and only the maximum elastic recovery force FNmax and the equivalent friction angle ρe of the thread piece will appear to a certain extent after repeated use. Change. Therefore, it is only necessary to analyze the change law of the maximum unscrewing torque of the lock nut when it is subjected to cyclic loads from these two aspects.

Guangdong snail custom-made 8.8 thin head

Since the Second Industrial Revolution, electricity has been widely used in people's life. The application and development of electric power has liberated social productivity and improved social production efficiency. It is indispensable for the progress of society. As a necessary component of electric power equipment, screws play an important role in the field of electric power equipment. Existing screws are all composed of Screw heads and studs, which require specific tools to tighten them. However, during the maintenance of electrical equipment, some workers working at heights need to carry extra The tightening tool of this staff has brought great inconvenience.

Hexagon socket head screw

Low head hexagon socket Bolts

It can be seen from the extrusion process that the screw works under high temperature, certain corrosion, strong wear and high torque. Therefore, the screw must: Screw screw 1) High temperature resistance, no deformation under high temperature; 2) Wear resistance, long life; 3 ) Corrosion resistance, the material is corrosive; 4) High strength, can withstand large torque, high speed; 5) Has good cutting performance; 6) After heat treatment, the residual stress is small, and the thermal deformation is small. [1]

DIN7984

Now people often use Spring Washers to lock nuts and bolts. Spring washers, generally stainless steel and carbon steel unclosed spiral washers, are placed under the nut and above the Flat Washer to increase the friction between the nut and the Bolt. The nut is loose to prevent vibration loosening

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